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प्रश्न
How would you account for the following:
Cobalt (II) is stable in aqueous solutions, but in the presence of complexing reagents, it is easily oxidised.
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उत्तर
In the presence of complexing reagents, the crystal field stabilization energy is greater than the third ionization enthalpy of cobalt. Thus, Co (II) is easily oxidized to Co (III).
संबंधित प्रश्न
How would you account for the following?
Transition metals exhibit variable oxidation states.
The elements of 3d transition series are given as: Sc Ti V Cr Mn Fe Co
Answer the following: Which element shows only +3 oxidation state?
Why do the transition elements have higher enthalpies of atomisation?
What are the transition elements? Write two characteristics of the transition elements.
Which is a stronger reducing agent, Cr2+ or Fe2+ and why?
Write the factors which are related to the colour of transition metal ions.
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The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
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Which element of the first transition series has highest second ionisation enthalpy?
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Photographic film and plates have - au essential ingredient of
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